Reduce duplicate code in verify-cvs2svn.py by factoring out pipe() function.
tree7c97facc1020f0a483158d435401f8e89421e1d3
-rw-r--r-- 2319 BUGS
-rw-r--r-- 11661 CHANGES
-rw-r--r-- 1034 COMMITTERS
-rw-r--r-- 2725 COPYING
-rw-r--r-- 761 HACKING
-rw-r--r-- 394 MANIFEST.in
-rw-r--r-- 1239 Makefile
-rw-r--r-- 83 README
drwxr-xr-x - contrib
-rwxr-xr-x 2466 cvs2git
-rw-r--r-- 26503 cvs2git-example.options
-rw-r--r-- 26234 cvs2hg-example.options
-rwxr-xr-x 2466 cvs2svn
-rw-r--r-- 29696 cvs2svn-example.options
drwxr-xr-x - cvs2svn_lib
drwxr-xr-x - cvs2svn_rcsparse
-rwxr-xr-x 816 dist.sh
drwxr-xr-x - doc
-rwxr-xr-x 120990 run-tests.py
-rwxr-xr-x 2967 setup.py
drwxr-xr-x - test-data
drwxr-xr-x - www